Middle Permian (Guadalupian) fusulinid taxonomy and biostratigraphy of the mid-latitude Dalan Basin, Zagros, Iran and their applications in paleoclimate dynamics and paleogeography

ABSTRACT The Middle–Upper Permian (Guadalupian–Lopingian) Dalan Basin was part of a very large carbonate ramp/platform along the passive margin of the Arabian Plate, located at mid-latitude Neo-Tethys Ocean. As shown in the modern world the mid-latitudes are areas where climatic fluctuations and velocity of climate change are most significant. Consequently, the most significant variations in foraminiferal diversity occur at higher latitudes as already noted for the Middle Permian (Guadalupian) foraminifers’ record. The fusulinids as a large, warm-water foraminifera were quite sensitive to water temperature. The optimal water temperature for recent warm-water benthic foraminifera with living symbionts, and consequently for fusulinids, is 20–30°C, while the lower limit is 14–16°C. Three climatically-determined assemblages were distinguished in Zagros and the surrounding areas. The first assemblage is characteristic of temperate, cool-water environments and contains smaller foraminifera with no symbionts, which possess resistance to such environments. Fusulinid staffellids, schubertellids, Chusenella, Eopolydiexodina and Monodiexodina can be found in the warmer water environments in a second climatic assemblage, transitional from temperate- to warm-water state. The third assemblage is characterized by the presence of verbeekinids in warm-water conditions in Zagros and appeared where surface-water temperature exceeded approximately 25°C. The proposed model of climate fluctuations and paleogeography in the Neo-Tethys is based on analyses of temporal and spatial distribution of fusulinids. Also, a temperate cool-water Monodiexodina is recorded in this area for the first time. Three new species of fusulinids are described.

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Interactions Between the Redside Shiner (Richardsonius balteatus) and the Steelhead Trout (Salmo gairdneri) in Western Oregon: The Influence of Water Temperature

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f87-194 ◽

1987 ◽

Vol 44 (9) ◽

pp. 1603-1613 ◽

Cited By ~ 51

Author(s):

Gordon H. Reeves ◽

Fred H. Everest ◽

James D. Hall

Keyword(s):

Water Temperature ◽

Warm Water ◽

Salmo Gairdneri ◽

Intermediate Water ◽

Steelhead Trout ◽

Cool Water ◽

Influence Of Water ◽

Similar Range ◽

Redside Shiner ◽

Richardsonius Balteatus

Water temperature influenced interactions between redside shiner (Richardsonius balteatus) and juvenile steelhead trout (Salmo gairdneri) (≥1 +) in the field and laboratory. Trout in cool water when shiner were absent and at intermediate water temperatures with shiner present occupied a similar range of habitats. Shiner alone in warm water occupied habitats similar to trout, but in the presence of trout occupied slower, deeper areas than when alone. In laboratory streams, production by trout was the same in the presence and absence of shiner in cool water (12–15 °C). In warm water (19–22 °C), production by trout decreased by 54% in the presence of shiner compared with when shiner were absent. Production of shiner in cool water decreased in the presence of trout, −0.3 g∙m−2∙d−1 together compared with 0.5 g∙m−2∙d−1 alone, but was not affected by the presence of trout in warm water. Trout distribution was not influenced by shiner in cool waters, but was influenced at warm temperatures. Shiner occupied all areas of the laboratory channels in the absence of trout in cool waters but were restricted to a few pools in the presence of trout. Distribution of shiner was not influenced by trout at warm temperatures.

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Guadalupian cool versus warm water deposits in central Iran: a record of the Capitanian Kamura event

Geological Magazine ◽

10.1017/s0016756817000863 ◽

2017 ◽

Vol 156 (3) ◽

pp. 430-446 ◽

Cited By ~ 1

Author(s):

SAKINEH AREFIFARD

Keyword(s):

Primary Productivity ◽

Association Studies ◽

Central Iran ◽

Warm Water ◽

Middle Permian ◽

Warm Climate ◽

Diagenetic Alteration ◽

Lime Mud ◽

Jamal Formation ◽

Oceanic Upwelling

AbstractAn integration of geochemical and grain association studies were carried out on Middle Permian deposits in central Iran where both cool and warm water carbonates are found. The recrystallization of most bioclasts, lime-mud matrix and ooids along with high Sr contents suggests a probable original aragonite mineralogy for carbonates of the Middle Permian Jamal Formation at the Shotori section. Low bulk carbonate δ18O values imply pervasive diagenetic alteration in this section. Conversely, Middle Permian deposits at the correlative Bagh-e Vang section have a probable calcite precursor supported by low Sr contents and no evidence of recrystallization. This mineralogical variation in these coeval carbonates is considered to be due to the change in depth and temperature of the depositional palaeoenvironment. δ13C values started to rise over 2 ‰ PDB and reached a maximum of 4.3 ‰ PDB at the Wordian–Capitanian boundary at the Bagh-e Vang section. This δ13C rise is attributed to high primary productivity as previously reported in the Capitanian Abadeh Formation in central Iran. The positive δ13C excursion in these sections is correlated with the Capitanian ‘Kamura event’ identified from the mid-Panthalassian sections in Japan. No noticeable positive excursion occurs in the δ13C plot at the Shotori section making the interpretation of palaeo-productivity difficult. It is suggested that an active oceanic upwelling was the probable driver of the Middle Permian oceanic productivity in central Iran. Remarkable negative δ13C excursions around 3.7 and 4.2 ‰ PDB in Capitanian carbonates close to the Guadalupian–Lopingian boundary at the Bagh-e Vang and Abadeh sections, respectively are recorded, which are a proxy for low palaeo-productivity and a transition from a cool to warm climate, consistent with an early Lopingian sea level rise.

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Predicting harvest of non-native signal crayfish in lakes — a role for changing climate?

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/cjfas-2015-0241 ◽

2016 ◽

Vol 73 (5) ◽

pp. 785-792 ◽

Cited By ~ 3

Author(s):

Patrik Bohman ◽

Lennart Edsman ◽

Alfred Sandström ◽

Per Nyström ◽

Marika Stenberg ◽

...

Keyword(s):

Population Dynamics ◽

Water Temperature ◽

Temperature Data ◽

Adult Survival ◽

Winter Mortality ◽

Freshwater Crayfish ◽

Catch Per Unit Effort ◽

Signal Crayfish ◽

Cool Water ◽

Air Temperatures

The signal crayfish (Pacifastacus leniusculus) was introduced to Sweden in 1960, and it has a high commercial and recreational value, but it may also have negative effects on native ecosystems. To better predict how climate warming will affect population dynamics of this cool-water crayfish, we explored the role of temperature and density dependence as explanatory factors of the subsequent years’ catch rates of commercially sized signal crayfish in four Swedish lakes. We found air temperatures to be good proxies for water temperatures in all lakes, except during winter. We could only obtain water temperature data for Lake Vättern, and winter temperature data were therefore only included in the analysis of catch-per-unit-effort patterns in this lake. Our results indicate that increasing mean air temperatures will potentially affect the population dynamics of cool-water freshwater crayfish species such as the signal crayfish. Based on data from four lakes, it seems that the population dynamics of signal crayfish are lake-specific and could be affected by either recruitment during the juvenile stage, the survival and growth of adults, or both. Increased fluctuations in water temperature during winter may potentially influence adult survival. To better predict the effects of global warming on the dynamics of cool-water crayfish populations, we suggest that future studies should investigate recruitment in crayfish along temperature gradients and the influence of variations in water temperature on winter mortality.

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New U–Pb constraints identify the end-Guadalupian and possibly end-Lopingian extinction events conceivably preserved in the passive margin of North America: implication for regional tectonics

Geological Magazine ◽

10.1017/s0016756816000959 ◽

2016 ◽

Vol 155 (1) ◽

pp. 119-131 ◽

Cited By ~ 9

Author(s):

V. I. DAVYDOV ◽

J. L. CROWLEY ◽

M. D. SCHMITZ ◽

W. S. SNYDER

Keyword(s):

North America ◽

Volcanic Ash ◽

New Age ◽

Passive Margin ◽

Cool Water ◽

Extinction Event ◽

Stratigraphic Position ◽

Extinction Events ◽

Phosphoria Formation ◽

Regional Tectonics

AbstractThe discovery and dating of a volcanic ash bed within the upper Phosphoria Formation in SE Idaho, USA, is reported. The ash occurs 11 m below the top of the phosphatic Meade Peak Member and yielded a 206Pb/238U date of 260.57 ± 0.07 / 0.14 / 0.31 Ma, i.e. latest Capitanian, Guadalupian. The stratigraphic position of this ash near the top of the Meade Peak phosphatic Member of Phosphoria Formation indicates plausible completeness of the sedimentation within the Guadalupian–Lopingian and probably at the Permo-Triassic (P-T) transitions. The new radiometric age reveals that the regional biostratigraphy and palaeontology of Phosphoria and Park City formations requires serious reconsideration, particularly in cool water conodonts, bryozoans and brachiopods. The new age proposes that the Guadalupian–Lopingian boundary (GLB) coincides with the Meade Peak – Rex contact and consequently with the end-Guadalupian extinction event. The lack of a major unconformity at the P-T transition suggests that the effects of the Sonoma orogeny were not as extensive as has been assumed.

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Pre-salt rift morphology controls salt tectonics in the Campos Basin, offshore SE Brazil

10.5194/egusphere-egu21-3263 ◽

2021 ◽

Author(s):

Francyne B. Amarante ◽

Christopher A-L. Jackson ◽

Leonardo M. Pichel ◽

Claiton M. S. Scherer ◽

Juliano Kuchle

Keyword(s):

Hydrocarbon Exploration ◽

Passive Margin ◽

Salt Tectonics ◽

Borehole Data ◽

Temporal And Spatial Distribution ◽

South Central ◽

Campos Basin ◽

Se Brazil ◽

Gravity Driven ◽

Base Salt

<p>Salt-bearing passive margin basins offshore SE Brazil have been and remain attractive for hydrocarbon exploration and production. In the Campos Basin, major reservoir types include post-salt turbidites, which are located in structural traps related to thin-skinned faulting above salt anticlines and rollers. Classic models of gravity-driven salt tectonics commonly depict kinematically linked zones of deformation, characterised by updip extension and downdip contraction, separated by a weakly deformed zone associated with downdip translation above a relatively smooth base-salt surface. We use 2D and 3D seismic reflection and borehole data from the south-central Campos Basin to show that this does not adequately capture the styles of salt-detached gravity-driven deformation above relict, rift-related relief. The base-salt surface is composed of elongated, broadly seaward-dipping ramps with structural relief reaching c. 2 km. These ramps define the boundary between the External High and the External Low, basement structures related to the rift tectonics. Local deformation associated with the base-salt ramps can overprint and/or influence regional, margin-scale patterns of deformation producing kinematically-variable and multiphase salt deformation. We define three domains of thin-skinned deformation: an updip extensional domain, subdivided into subdomains E1 and E2, an intermediate multiphase domain and a downdip contractional domain. The multiphase domain is composed of three types of salt structures with a hybrid extensional-contractional origin and evolution. These are: (i) contractional anticlines that were subjected to later extension and normal faulting; (ii) diapirs with passive and active growth later subjected to regional extension, developing landward-dipping normal faults on the landward flank; and, lastly, (iii) an extensional diapir that was subsequently squeezed. We argue that this multiphase style of deformation occurs as a consequence of base-salt geometry and relief creating local variations of salt flow that localize extension at the top and along the ramps, and contraction at the base. Translation and extension of salt and its overburden across major base-salt ramps resulted in three ramp syncline basins northeast of the study area, partially bounded by salt-detached listric faults. The temporal and spatial distribution and evolution of these and other key salt and overburden structures, and their relationship to base-salt relief, suggest 30 to 60 km of horizontal gravity-driven translation of salt and overburden.</p>

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WARM-WATER PLATFORM AND COOL-WATER SHELF CARBONATES OF THE ABROLHOS SHELF, SOUTHWEST AUSTRALIA

Cool-Water Carbonates ◽

10.2110/pec.97.56.0023 ◽

1997 ◽

pp. 23-36 ◽

Cited By ~ 10

Author(s):

LINDSAY B. COLLINS ◽

ROY E. FRANCE ◽

ZHONG RONG ZHU ◽

KARL-HEINZ WYRWOLL

Keyword(s):

Warm Water ◽

Cool Water ◽

Southwest Australia

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Permian Triassic geologic evolution in the southern Kitakami Belt, Japan

The Paleontological Society Special Publications ◽

10.1017/s2475262200007152 ◽

1992 ◽

Vol 6 ◽

pp. 155-155

Author(s):

Kotaro Kamada

Keyword(s):

Middle Triassic ◽

Sedimentary Basin ◽

Tectonic Setting ◽

Japan Sea ◽

Passive Margin ◽

Middle Permian ◽

Asian Continent ◽

Transform Faults ◽

Magmatic Arc ◽

The Japan Sea

Before opening of the Japan Sea, the Japanese islands were attached to the eastern margin of the Asian continent. The Southern Kitakami Belt is regarded as a micro-continent in an accretional complex of the islands, that accreted before the Early Cretaceous. But its tectonic setting and location between the belt and the Asian continent is still an unresolved argument.Permo-Triassic sequences in the Southern Kitakami Belt are composed of shallow to off-shore deposits. These deposits are composed of clastics, carbonates with volcaniclastics. But there was no volcanic activity in the belt in the Middle to Late Permian. From the viewpoint of the sedimentary character and history, the Middle Permian to Middle Triassic sequences differ from their previous and their following successions in the belt. And the sedimentary basin of Middle Permian to Middle Triassic was bounded by transform faults. Magmatic arc was replaced by passive margin as hinterland of the Southern Kitakami Belt during the Middle Permian to Middle Triassic. It means that the sedimentary basin moved from the margin of Yangtze Platform to Sino-Korean Platform at that time.

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New light on the nomenclature, taxonomy, and biology of Hemipholis species (Echinodermata: Ophiuroidea: Ophiactidae)

Zootaxa ◽

10.11646/zootaxa.3048.1.2 ◽

2011 ◽

Vol 3048 (1) ◽

pp. 44 ◽

Cited By ~ 2

Author(s):

GORDON HENDLER

Keyword(s):

Water Temperature ◽

Cold Tolerance ◽

Coastal Water ◽

Brittle Star ◽

Eastern Pacific ◽

Warm Water ◽

Western Atlantic ◽

Boundary Currents ◽

Incertae Sedis ◽

Nomen Novum

Hemipholis cordifera is the correct name for the only known Western Atlantic species of Hemipholis. Hemipholis elongata, a name which has been used in place of H. cordifera, is a nomen dubium that cannot unambiguously be assigned to any known species of brittle star. Evidence is presented that the genus Hemipholis presently comprises only H. cordifera and its geminate Eastern Pacific congener Hemipholis gracilis, and it is shown that the latter name has priority over Hemipholis affinis. Hemipholis gracilis and H. cordifera are illustrated and compared to show how mature individuals can be distinguished. However, small individuals of both species are extremely similar. The latitudinal distributions of H. cordifera and H. gracilis appear to be causally related to coastal water temperature, possibly in conjunction with divergent ocean currents, and the relatively broad range of H. cordifera compared to H. gracilis is attributed to its cold tolerance and to the influence of widespread warm-water boundary currents in the central Western Atlantic. As regards the two other congeners that have been described, Hemipholis wallichii is revealed to be a juvenile ophiuroid incertae sedis, and Hemipholis microdiscus was previously transferred to the Amphiuridae and assigned the nomen novum, Amphiura microdiscoida.

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Neogene to Quaternary uplift history along the passive margin of the northeastern Arabian Peninsula, eastern Al Hajar Mountains, Oman

Quaternary Research ◽

10.1017/qua.2018.51 ◽

2018 ◽

Vol 90 (2) ◽

pp. 418-434 ◽

Cited By ~ 8

Author(s):

Daniel Moraetis ◽

Frank Mattern ◽

Andreas Scharf ◽

Gianluca Frijia ◽

Timothy M. Kusky ◽

...

Keyword(s):

Arabian Peninsula ◽

Outer Wall ◽

Passive Margin ◽

Arabian Plate ◽

Makran Subduction Zone ◽

Marine Terraces ◽

Topographic Survey ◽

Uplift Rates ◽

History Of ◽

Uplift History

AbstractThis work explores the uplift history of the best exposed marine terraces in the northeastern Arabian Peninsula (eastern Al Hajar Mountains). A multidisciplinary approach was employed, including a topographic survey, 14C dating, thin section studies, and scanning electron microscopy analyses. Six distinctive marine terraces with widths ranging from tenth of meters to kilometers and elevations from 5 to ~400 m were studied. These terraces record an along-strike heterogeneous uplift history, while they show temporally variable uplift rates ranging between 0.9 to 6.7 mm/yr, which correlates well with other published uplift rates of marine terraces of the eastern Arabian Peninsula. We attribute the variable uplift along strike of the terraces, to a combination of uplift mechanisms: (1) during early to mid-Miocene along deep-rooted reverse faults that bound large crustal-scale blocks, (2) Pliocene or post-Pliocene uplift on the outer wall of the forebulge of the lower Arabian Plate as it bends to enter the Zagros-Makran subduction zone, and (3) a possible slowdown of subduction for the past ~40 ka.

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Tectonic Evolution of the West Bogeda: Evidences from Zircon U-Pb Geochronology and Geochemistry Proxies, NW China

Minerals ◽

10.3390/min10040341 ◽

2020 ◽

Vol 10 (4) ◽

pp. 341

Author(s):

Yalong Li ◽

Wei Yue ◽

Xun Yu ◽

Xiangtong Huang ◽

Zongquan Yao ◽

...

Keyword(s):

Tectonic Evolution ◽

Tectonic Setting ◽

Continental Rift ◽

Middle Permian ◽

Upper Permian ◽

Late Permian ◽

Island Arcs ◽

The West ◽

Structural Deformations ◽

Tian Shan

The Bogeda Shan (Mountain) is in southern part of the Central Asian Orogenic Belt (CAOB) and well preserved Paleozoic stratigraphy, making it an ideal region to study the tectonic evolution of the CAOB. However, there is a long-standing debate on the tectonic setting and onset uplift of the Bogeda Shan. In this study, we report detrital zircon U-Pb geochronology and whole-rock geochemistry of the Permian sandstone samples, to decipher the provenance and tectonic evolution of the West Bogeda Shan. The Lower-Middle Permian sandstone is characterized by a dominant zircon peak age at 300–400 Ma, similar to the Carboniferous samples, suggesting their provenance inheritance and from North Tian Shan (NTS) and Yili-Central Tian Shan (YCTS). While the zircon record of the Upper Permian sandstone is characterized by two major age peaks at ca. 335 Ma and ca. 455 Ma, indicating the change of provenance after the Middle Permian and indicating the uplift of Bogeda Shan. The initial uplift of Bogeda Shan was also demonstrated by structural deformations and unconformity occurring at the end of Middle Permian. The bulk elemental geochemistry of sedimentary rocks in the West Bogeda Shan suggests the Lower-Middle Permian is mostly greywacke with mafic source dominance, and tectonic setting changed from the continental rift in the Early Permian to post rift in the Middle Permian. The Upper Permian mainly consists of litharenite and sublitharenite with mafic-intermediate provenances formed in continental island arcs. The combined evidences suggest the initial uplift of the Bogeda Shan occurred in the Late Permian, and three stages of mountain building include the continental rift, post-rift extensional depression, and continental arc from the Early, Middle, to Late Permian, respectively.

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